  #include<stdio.h>
  int main()
  {
      int a=1;
	int b = 9;
	int c = 10;
      switch(a)
      {   
	  int d=20;
          case 1:
		d = 99 
		printf("b is %d,c %d\n", b, c);
                break;
          default:
		printf("b is %d\n",b);
                break;
      }
      return 0;
  }
